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The social media giant launched the feature in 2014 and is intended to make it easier for a user to let their loved ones know they are safe. It has been used following multiple crisis like the earthquakes in Nepal and the November 2015 terror attacks in Paris.

The national Storm Prediction Center in Norman, Oklahoma, said 2.7 million people in parts of Louisiana, Mississippi and Alabama would be at the highest risk of severe weather on Tuesday. In Louisiana, tornado watches covered New Orleans and Baton Rouge. In Mississippi, a tornado watch covered the southern half of the state. In Alabama, the city of Mobile was in the storm's path.